From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- include/linux/alarmtimer.h | 59 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 include/linux/alarmtimer.h (limited to 'include/linux/alarmtimer.h') diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h new file mode 100644 index 000000000..a899402a5 --- /dev/null +++ b/include/linux/alarmtimer.h @@ -0,0 +1,59 @@ +#ifndef _LINUX_ALARMTIMER_H +#define _LINUX_ALARMTIMER_H + +#include +#include +#include +#include + +enum alarmtimer_type { + ALARM_REALTIME, + ALARM_BOOTTIME, + + ALARM_NUMTYPE, +}; + +enum alarmtimer_restart { + ALARMTIMER_NORESTART, + ALARMTIMER_RESTART, +}; + + +#define ALARMTIMER_STATE_INACTIVE 0x00 +#define ALARMTIMER_STATE_ENQUEUED 0x01 + +/** + * struct alarm - Alarm timer structure + * @node: timerqueue node for adding to the event list this value + * also includes the expiration time. + * @period: Period for recuring alarms + * @function: Function pointer to be executed when the timer fires. + * @type: Alarm type (BOOTTIME/REALTIME) + * @enabled: Flag that represents if the alarm is set to fire or not + * @data: Internal data value. + */ +struct alarm { + struct timerqueue_node node; + struct hrtimer timer; + enum alarmtimer_restart (*function)(struct alarm *, ktime_t now); + enum alarmtimer_type type; + int state; + void *data; +}; + +void alarm_init(struct alarm *alarm, enum alarmtimer_type type, + enum alarmtimer_restart (*function)(struct alarm *, ktime_t)); +int alarm_start(struct alarm *alarm, ktime_t start); +int alarm_start_relative(struct alarm *alarm, ktime_t start); +void alarm_restart(struct alarm *alarm); +int alarm_try_to_cancel(struct alarm *alarm); +int alarm_cancel(struct alarm *alarm); + +u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval); +u64 alarm_forward_now(struct alarm *alarm, ktime_t interval); +ktime_t alarm_expires_remaining(const struct alarm *alarm); + +/* Provide way to access the rtc device being used by alarmtimers */ +struct rtc_device *alarmtimer_get_rtcdev(void); + +#endif -- cgit v1.2.3-54-g00ecf